diff options
Diffstat (limited to 'drivers/char/tty_io.c')
-rw-r--r-- | drivers/char/tty_io.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 48d795bb8c4b..811dadb9ce3e 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c | |||
@@ -543,14 +543,12 @@ void tty_ldisc_put(int disc) | |||
543 | struct tty_ldisc *ld; | 543 | struct tty_ldisc *ld; |
544 | unsigned long flags; | 544 | unsigned long flags; |
545 | 545 | ||
546 | if (disc < N_TTY || disc >= NR_LDISCS) | 546 | BUG_ON(disc < N_TTY || disc >= NR_LDISCS); |
547 | BUG(); | ||
548 | 547 | ||
549 | spin_lock_irqsave(&tty_ldisc_lock, flags); | 548 | spin_lock_irqsave(&tty_ldisc_lock, flags); |
550 | ld = &tty_ldiscs[disc]; | 549 | ld = &tty_ldiscs[disc]; |
551 | if(ld->refcount == 0) | 550 | BUG_ON(ld->refcount == 0); |
552 | BUG(); | 551 | ld->refcount--; |
553 | ld->refcount --; | ||
554 | module_put(ld->owner); | 552 | module_put(ld->owner); |
555 | spin_unlock_irqrestore(&tty_ldisc_lock, flags); | 553 | spin_unlock_irqrestore(&tty_ldisc_lock, flags); |
556 | } | 554 | } |
@@ -645,8 +643,7 @@ void tty_ldisc_deref(struct tty_ldisc *ld) | |||
645 | { | 643 | { |
646 | unsigned long flags; | 644 | unsigned long flags; |
647 | 645 | ||
648 | if(ld == NULL) | 646 | BUG_ON(ld == NULL); |
649 | BUG(); | ||
650 | 647 | ||
651 | spin_lock_irqsave(&tty_ldisc_lock, flags); | 648 | spin_lock_irqsave(&tty_ldisc_lock, flags); |
652 | if(ld->refcount == 0) | 649 | if(ld->refcount == 0) |